Moves files to folders based on their extension :

#!/bin/sh
 
cd ~/Downloads
pwd
 
## Image
echo "+ moving images"
 
find . -maxdepth 1 -type f \
-name "*jpg" -o -name "*JPG" \
-o -name "*jpeg" -o -name "*JPEG" \
-o -name "*png" -o -name "*PNG" \
| xargs -I '{}' mv {} images
 
 
## Document
echo "+ moving documents"
 
find . -maxdepth 1 -type f \
-name "*pdf" -o -name "*PDF" \
-o -name "*.doc" -o -name "*.DOC" \
-o -name "*.docx" -o -name "*.DOCX" \
-o -name "*.ppt" -o -name "*.PPT" \
-o -name "*.pptx" -o -name "*.PPTX" \
-o -name "*.xls" -o -name "*.XLS" \
-o -name "*.xlsx" -o -name "*.XLSX" \
-o -name "*odt" -o -name "*ODT" \
-o -name "*ods" -o -name "*ODS" \
-o -name "*odp" -o -name "*ODP" \
| xargs -I '{}' mv {} documents
 
 
## CAO
echo "+ moving CAO files"
 
find . -maxdepth 1 -type f \
-name "*stl" -o -name "*STL" \
-o -name "*dwg" -o -name "*DWG" \
-o -name "*dxf" -o -name "*DXF" \
| xargs -I '{}' mv {} CAO
 
 
## Vidéo
echo "+ moving videos"
 
find . -maxdepth 1 -type f \
-name "*mov" -o -name "*MOV" \
-o -name "*mp4" -o -name "*MP4" \
-o -name "*avi" -o -name "*AVI" \
-o -name "*mkv" -o -name "*MKV" \
| xargs -I '{}' mv {} videos
 
 
## Div execs / data / archives
echo "+ moving the rest"
 
find . -maxdepth 1 -type f \
-name "*txt" -o -name "*TXT" \
-o -name "*iso" -o -name "*ISO" \
-o -name "*csv" -o -name "*CSV" \
-o -name "*ics" -o -name "*ICS" \
-o -name "*sh" -o -name "*SH" \
-o -name "*py" -o -name "*PY" \
-o -name "*exe" -o -name "*EXE" \
-o -name "*AppImage" \
-o -name "*msi" -o -name "*MSI" \
-o -name "*deb" -o -name "*DEB" \
-o -name "*rpm" -o -name "*RPM" \
-o -name "*zip" -o -name "*ZIP" \
-o -name "*rar" -o -name "*RAR" \
-o -name "*.tar" -o -name "*.TAR" \
| xargs -I '{}' mv {} div-data-exe-archives
 
## remove ext
echo "- removing exts"
rm *.ext 2>/dev/null
 
## End information
echo ""
echo "unsorted files"
ls -al | grep '^-' | wc -l
echo ""
echo "Size on disk "
du -sh
echo ""
 
echo "done"

https://ostechnix.com/copy-specific-file-types-while-keeping-directory-structure-in-linux/

<bash code>find. -name '*.mp3' -exec cp –parents \{\}~/target\;</code>

• find – command to find files and folders in Unix-like systems.
• The dot (.) - represents that we copied the contents from current directory.
• -name ‘*.mp3' – search for files with the extension .mp3
• -exec cp – execute the ‘cp’ command to copy files from source to destination directory.
• –parents - create the intermediate parent directories if needed to preserve the parent directory structure.
• \{\} – is automatically replaced with the file name of the files found by the ‘find’ command. And the braces are escaped to protect them from expansion by the shell in some “find” command versions. You can also use {} without escape characters.
• ~/target – target directory to save the matching files.
• \; – indicates it that the commands to be executed are now complete, and to carry out the command again on the next match.

<bash code>find. -name '*.PNG' -exec cp\{\}allpics/\;</code>

Here we are at the root of the file tree to explore and the destination folder is allpics.

count the differences <bash code>diff -y <(cd /path/to/files/1/ && ls -R) <(cd /path/to/files/2/ && ls -R) | wc -l</code>

list the differences in diff.log <bash code>diff -y <(cd /path/to/files/1/ && ls -R) <(cd /path/to/files/2/ && ls -R) > diff.log</code>

adding grep -E \/ or -d on the ls allows you to list directories

source *detect duplicates* <bashcode>fdupes -Sr .</code>